Browsing by Author "Farhang, Arman"
Now showing items 1-17 of 17
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Downlink Transmission in FBMC-based Massive MIMO with Co-located and Distributed Antennas
(2024)This paper introduces a practical precoding method for the downlink of Filter Bank Multicarrier-based (FBMC-based) massive multiple-input multiple-output (MIMO) systems. The proposed method comprises a two-stage precoder, ... -
FBMC Receiver Design and Analysis for Medium and Large Scale Antenna Systems
(2022)In this paper, we design receivers for filter bank multicarrier-based (FBMC-based) massive MIMO considering practical aspects such as channel estimation and equalization. In particular, we propose a spectrally efficient ... -
Joint Channel Estimation and Equalization in Massive MIMO Using a Single Pilot Subcarrier
(2023)The focus of this letter is on the reduction of the large pilot overhead in orthogonal frequency division multi-plexing (OFDM) based massive multiple-input multiple-output (MIMO) systems. We propose a novel joint channel ... -
Low-Complexity Equalization and Detection for OTFS-NOMA
(2023)Orthogonal time frequency space (OTFS) modula- tion has recently emerged as a potential 6G candidate waveform which provides improved performance in high-mobility scenarios. In this paper we investigate the combination ... -
Low-Complexity Joint CFO and Channel Estimation for RIS-aided OFDM Systems
(2021)Accurate channel estimation is essential for achieving the performance gains offered by reconfigurable intelligent surface (RIS)-aided wireless communications. A variety of channel estimation methods have been proposed ... -
Low-Complexity Reliability-Based Equalization and Detection for OTFS-NOMA
(2023)Orthogonal time frequency space (OTFS) modula- tion has recently emerged as a potential 6G candidate waveform which provides improved performance in high-mobility scenarios. In this paper we investigate the combination ... -
Multi-operator connectivity sharing for reliable networks: a data-driven risk analysis
(2021)A key distinction between today’s and future networks is the appetite for reliable communication to support emerging critical-communication services. In this paper, we study multi-operator connectivity as a form of redundancy ... -
Multiuser communications for next generation wireless networks
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2015)Orthogonal frequency division multiplexing (OFDM) has been the technology of choice for years in wired and wireless systems. However, it has some drawbacks that limit its use in the fifth generation of wireless communication ... -
Network Sharing for Reliable Networks: A Data-Driven Study
(2020)The next generation of mobile networks will bring an appetite for reliable communication, which enables emerging critical-communication services. In this paper, we present network sharing between operators as a way to ... -
A Practical Pilot for Channel Estimation of OTFS
(2023)The widely used embedded impulse pilot for channel estimation of orthogonal time frequency space modulation (OTFS) has a prohibitively large peak to average power ratio (PAPR). Hence, in this paper, we propose a novel ... -
Practical Synchronization for OTFS
(2023)In the existing literature on joint timing and frequency synchronization of orthogonal time frequency space modulation (OTFS), practically infeasible impulse pilot with large peak-to-average power ratio (PAPR) is deployed. ... -
Resource Allocation for Mixed Numerology NOMA
(2021)6G wireless networks will require the flexibility to accommodate an extremely diverse set of service types. Accommodating different quality of service (QoS) requirements for these service types necessitates the use of mixed ... -
RIS Meets Aerodynamic HAPS: A Multi-Objective Optimization Approach
(2023)In this letter, we propose a novel network architecture for integrating terrestrial and non-terrestrial networks (NTNs) to establish connection between terrestrial ground stations which are unconnected due to blockage. ... -
Time and Frequency Synchronization for OTFS
(2022)In this letter, we propose timing offset (TO) and carrier frequency offset (CFO) estimators for orthogonal time frequency space modulation (OTFS). The proposed estimators do not require any additional training overheads ... -
Truncated Turbo Equalizer with SIC for OTFS
(2023)Orthogonal time frequency space (OTFS) is a promising candidate waveform for the next generation wireless communication systems. OTFS places data in the delay-Doppler (DD) domain, which simplifies channel estimation in ...
